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LM385BDR-1-2 Datasheet(PDF) 4 Page - Texas Instruments |
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LM385BDR-1-2 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 15 page LM2851.2, LM3851.2, LM385B1.2 MICROPOWER VOLTAGE REFERENCES SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics at specified free-air temperature PARAMETER TEST TA† LM285-1.2 LM385-1.2 LM385B-1.2 UNIT PARAMETER TEST CONDITIONS TA† MIN TYP MAX MIN TYP MAX MIN TYP MAX UNIT VZ Reference voltage IZ = I(min) to 20 mA‡ 25 °C 1.223 1.235 1.247 1.21 1.235 1.26 1.223 1.235 1.247 V αVZ Average temperature coefficient of reference voltage§ IZ = I(min) to 20 mA‡ Full range ±20 ±20 ±20 ppm/ °C Change in IZ = I(min) 25 °C 1 1 1 ∆VZ Change in reference IZ = I(min) to 1 mA‡ Full range 1.5 1.5 1.5 mV ∆VZ reference voltage with current IZ = 1 mA 25 °C 12 20 20 mV voltage with current IZ = 1 mA to 20 mA Full range 30 30 30 ∆VZ/∆t Long-term change in reference voltage IZ = 100 µA 25 °C ±20 ±20 ±20 ppm/khr IZ(min) Minimum reference current Full range 8 10 8 15 8 15 µA zz Reference IZ = 100 µA, 25 °C 0.2 0.6 0.4 1 0.4 1 Ω zz Reference impedance IZ = 100 µA, f = 25 Hz Full range 1.5 1.5 1.5 Ω Vn Broadband noise voltage IZ = 100 µA, f = 10 Hz to 10 kHz 25 °C 60 60 60 µV † Full range is −40°C to 85°C for the LM285-1.2 and 0°C to 70°C for the LM385-1.2 and LM385B-1.2. ‡ I(min) = 10 µA for the LM285-1.2 and 15 µA for the LM385-1.2 and LM385B-1.2 § The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature range. |
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